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Hack!
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PKU v. THU (Preliminary Round 2)
Time Limit: 4 s
Memory Limit: 1024 MB
# 1776. Eavesdropper Evasion
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(PTZ)
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The problem was used in the following contest:
Nordic Collegiate Programming Contest 2021
Petrozavodsk Winter 2022. Day 4. Almost Northern Contest
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